function test() {
    var cars = ["1", "2", "3"]
    var i = 1;
    for (i = 0; i < cars.length; i++) {
        document.write(cars[i] + "<br>");
        // document.write(i + 1 + "<br>");
        // document.write(i);
    }
    var x = 2;
    while (i < 5) {
        x += x + "The number is " + i + "<br>";
        i++;
    }
}
